Classic cars forum & vehicle restoration.
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welshrover
Joined: 09 Aug 2011 Posts: 326
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Posted: Fri May 04, 2012 6:06 pm Post subject: |
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lumenition i know the one .a mate fitted one to a mk2 escort in about 1980 odd. i think he got about 2000 miles out of it , theyre not much better now by what ive heard about them. |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Fri May 04, 2012 6:15 pm Post subject: |
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Bitumen Boy wrote: | ukdave2002 wrote: |
The quality of the installation of any aftermarket system plays a big part; if the car has a dynamo then the electronic ignition unit will need some protection against the electrical noise and spikes generated by a mechanically regulated system, a simple £2.50 snubber from Maplin will do the job , its frustrating that the manufacturers of the ignition systems don't build this in, or advise that additional protection is needed.
Dave |
Dave, can you tell me more about this "snubber" device? I wonder if it may have prevented the problems I've had with a CD player wired into a dynamo system, and if it's that cheap, probably worth a try next time I'm near a Maplins! |
Hi
This is the device http://www.maplin.co.uk/contact-suppressor-498
Wire it across the supply, it will "snub" voltage spikes, doesn't matter which way round its wired. What are the symptoms with the CD player?
Dave |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Fri May 04, 2012 6:46 pm Post subject: |
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welshrover wrote: | like the e type jag and the xk models 140 - 150 mph ellegedly.they were on points ignition too, was there such thing as electronic ignition as we know it back then, the first time id heard of it was round the middle of the eightys , |
Lucas had developed a transistor assisted ignition in the 50's yes fifty's ,but I think it was only fitted to F1 cars , the mainstream manufacturers started installing Transistor Assist or Ignition amplifier (same thing) in the late 60's, I certainty had a 1970's Hillman Avenger that was fitted with a separate transistor module...Somewhere in the loft is a project I did at collage about the development of ignition systems, with some bench testing comparisons, of course what we didn't do was long term reliability, that said there are 4 things that cause premature death to electronics; Heat, Water, overload and dirty power, get this right and stuff will work for donkeys years..... overload in this scenario would be a coil of too low resistance.
Dave |
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Julian
Joined: 19 Apr 2010 Posts: 278 Location: Warrington
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Posted: Fri May 04, 2012 8:18 pm Post subject: |
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One car worthy of retro-fitting contactless ignition must be the 2CV, I think you had to pull the front of the car off and the fan to see the things. I had a 2CV once, thankfully this had previously been done!
Julian. |
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Bitumen Boy
Joined: 26 Jan 2012 Posts: 1735 Location: Above the snow line in old Monmouthshire
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Posted: Fri May 04, 2012 9:31 pm Post subject: |
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ukdave2002 wrote: |
Hi
This is the device http://www.maplin.co.uk/contact-suppressor-498
Wire it across the supply, it will "snub" voltage spikes, doesn't matter which way round its wired. What are the symptoms with the CD player?
Dave |
Thanks for that Dave, looks a simple enough bit of kit! Symptoms with the CD - OK it's probably on the way to dying now, but be prepared for the next one! - are mainly failure to recognise perfectly good discs, or tracks on those discs, inability to jump to specific tracks etc etc etc... The failure to recognise problem I can usually get around by switching on/off, switching modes (CD/radio), ejecting and reinserting the disc or briefly interrupting the supply (using a special killswitch I fixed at the side) but sometimes nothing works. The same unit worked OK when it was fitted in one of the Minis (with alternator) that I bought, but this was in the early days of car CD players and I swapped it for a cassette unit it went into storage until another cassette unit in the Herald went west the other year and I couldn't get another one, not new at any rate. Same car has seen off 2x cassette units (one new, one used) in pretty short order, so as everything else works fine maybe it's just that electronics don't like dynamos! Mind you, the dynamo struggles to keep up at night so I've been thinking of an alternator swap - but given that I've a couple sets of dynamo brushes in stock, I don't really want to go down that route, don't suppose I'd get much for them on fleabay... |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Sun May 06, 2012 6:21 pm Post subject: |
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Hi, you are right "electronics don't like dynamo's" ... The symptoms you describe with the cd player I'd be inclined to check the supply voltage; the snubber will sort out voltage spikes, but if the supply voltage is to high or to low it won't compensate for this.
Cheers Dave |
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Bitumen Boy
Joined: 26 Jan 2012 Posts: 1735 Location: Above the snow line in old Monmouthshire
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Posted: Sun May 06, 2012 7:36 pm Post subject: |
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ukdave2002 wrote: | Hi, you are right "electronics don't like dynamo's" ... The symptoms you describe with the cd player I'd be inclined to check the supply voltage; the snubber will sort out voltage spikes, but if the supply voltage is to high or to low it won't compensate for this.
Cheers Dave |
Hi Dave, supply voltage was the first thing I thought of and checked, and about the last thing I'd thought of until you mentioned the snubber thing. It's probably not going to help now (just as bad running off battery in the garage) but when/if I get round to replacing it I don't want to kill another one... |
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